Adult Swim announced last May that the series had been picked up for 70 more episodes. Wednesday’s news is the first fans have heard from Adult Swim about the forthcoming season since then.

"Rick and Morty" follows the exploits of Rick, an unhinged mad scientist, who takes his reluctant nephew, Morty, on crazy adventures through time and space.

The animated series has been massively popular for Adult Swim. The third season's finale scored a 3.9 rating among adults 18-24 and a 3.2 among adults 18-34 in Nielsen’s Live+Same Day numbers -- the highest ratings in network history, Variety reported.